Portable fire-extinguisher.



ted States, residing at y-ofQaInden and State e invented new and usein Portable Fire-Extin folloi'ving is a specipparatus.

"ite'ndedto usetwo sepons \vhic'h,xvhen mixed nduce foamf ancl. a gas ofthe invention is to 21m." ipparatus for ing chainben including .l-way valveto the outll c lt a hose may be attached n li foainto\vard the fire, the ct in 1m H "11g a readily operable klv oducingthe'foam when extinguishing appararrfed to with means for q in the separatetcontainers vhich foam-producing u1.lwhicl 1liquids are to m (the containers by air {presup iliedflthereto from a high r carried by the appa:

f vide a etmtajlner havin Ya construction ich contribute; to produce. an

fi e extinguisher.

WUQLIAngWL WALK R,

parts being" broken away.

of the" invention is to pro- )stantially uniforni .re-'

ahj ectifof the invention'is to n it to. sustain internal sists in the general Conn and" leta l described here- Cllliltlltllfi the invention.

h on CAMDEN, new messy, nss enon T MACANBREWS a. com ntcyjon cn vmnngnnw :rnnsnma ooerona'rlon OF NEW JERSEY.

; PORTABLE sinn-nxmmeuzsnsn. 1

is described in; theiollowing specification,

While the broad scope of the invention is pointed out in lillQlPPQDdGd claiins' In the drawing, Figure 1 is a plan of apparatus embodying iny invention, certain Fig. 2 is alongitu'dinal vertical section taken substantially on the line"2-2 of Fig. 1. Fig.3 is a rear elevation of the apparatus. Fig. l is a. horizontal ci-oss-section through the mixing device or mixer in which the liquids nifbefore they are finally projected toward. the fire. Fig. 5 is a vertical section through atfeducing valve which is embodiedthe invention. i 1 j Theapparatus preferably embodies a frame of simple fol-inf inoiinted upon wheels, 11 and provided with a shaft 12 which enables. the frame to be pushedfrom place to place. The'fraine is suitably sup- .are attached and this axle is preferably formed with a downwardly extending how 14 near its middle portion to COIIfOIHl'iJOtl'IG shape of the duplex container. The liquids which are used. in the apbaratus are prefer ably held in separate containers.

According to my invention, 1" provide means for developing air pressure in the containers so as to force the liquids but and I effect the mixture of the liquids and project the mixture toward thefire. In order ported on an ax1ev13 to whichthe wheels to accomplish this I prefer to provide two containers 15 which are preferably forined in aeyhnder I6 whichcyhnder is carriedm asubstantially horizontal position on the frame. This cylinder is provided w'ithcon' vex preferably substantially hemispherical heads 17" and is divided intotWoicontaine-rs 15 by means of a transverse partitiongor bulk head 18,constructed of a fiat plate.

' The upper side ofthe cylinder 16 is provided with two' removable closures 19 which give access to theinterior oi the two, containers 15 to enable thein'to be supPliedWith their respective liquids. L'Ihe cylinder lfi is preferably supported from underneath by transverse straps or girths 20, the endsof which are attached on the side bars 21of the frame. The hemispherical she'll formof the heads 1.7 is very advantageous'asthis form, of head withstands high internal pressure without bulging or weakening.

Furthermore, in my apparatus the transverse. partition Wall 18 may be very thin,

because the pressure on the two faces of the.

Wall balance each other. Hence it is unnecessary to provide stays to prevent the plate from bulging. This effect results from features of my apparatus to be described hereinafter.

At a suitable point on the frame I support a mixing device or mixer 22 which may be of any suitable construction, but preferably such as that shown in Fig. 4 in which the device is in the form of a three-way cock having a cylindrical case 23 of relatively largeproportions and capacity and having two threaded nipples 2% for admitting the two liquids into the mixer in the same general direction but in crossing paths. These nipples connect with the tanks respectively by means of suitable pipes 25 and 26. When the plug 27 of the stop cock 22 is in the position shown, the liquids pass into the interior of the plug which provides an enlarged mixing chamber, and mix together to form a foam, and they pass from the mixer by a suitable threaded nipple 28 which carries the mixture forward in the same general direction that the liquids have in entering the mixer. To'this nipple is attached a suitable hose 29 for directing the mixture toward the fire. The plug 27 may be rotated by means of an ordinary handle or lever 30.

It is understood that the containers 15 are only partially filled with their respective liquids in order to form air chambers over the liquids. In order to charge the air chambers of these containers with compressed air, I prefer to provide a relatively high pressure compressed air reservoir 31 which may be supported in suitable metal straps 32 on the upper side of the cylinder '16 and preferably at one side. This reservoir 31 is to be charged withcompressed air under considerable presssure, and I provide for admitting this air at a reduced pressure into the air chamber in the upper part of each container. For this purpose I prefer to-provide a pipe 33 which leads from the reservoir 31 and this pipe is provided with branches 34 which are connected 1 respectively with the two containers 15, connection being made thereto through the upper wall of the cylinder.

lonnected in the pipe 33 I provide a reducing valve 34 through which air from the reservoir 31 will pass and develop a re duced pressure in the containers 15. This reducing valve is of any suitable construction which will operate to maintain automatically a substantially continuous pressure in the containers 15. Air is admitted into the reducing valve through a suitable valve 35 when it is desired to use the apparatus.

In Fig. 5 I illustrate a type of pressurereducing valve which may be employed if desired. In this type of valve the air passes into the valve at the connection 36 and a small bleeder port 37 leads the high-pressure air upwardly to the upper side of a small valve 38 having a small area exposed to the high pressure. If the pressure is suflii ciently high, this valve 38 will be unseated and will move in a downward direction;

this will permit the air to pass down into the air chamber 39 and through port-.40 into a pilot cylinder 41 in which the air exerts pressure upon a piston 42.

p This forces the piston 42 downwardly and pushes.

to the stem or valve 38 so that when it rises,

itreseats the valve 38 and shuts off the flow of air whereupon spring 43 closes valve 43. The diaphragm 46 isforced downwardly by a spring 48 the pressure of which may .be regulated by means of an adjusting screw 19, carrying a hand wheel'50. Evidently by rotating the hand wheel 50 the degree of pressure developed in.the air chamber l7 and in the containers may be nicely regulated. In this way the apparatus can be adjusted so as to change the delivery pressure and the velocity with which the mixture of liquids is projected toward the fire.

Evidently, these functions can be adapted Q to particular requirements depending upon the height of the building on fire or the distance of the point at which the fire is located.

By employing a high-pressure air reservoir such as the reservoir 31, I am enabled to insure that asufficiently high working pressure will be maintained in the liquid containers until their-contents have been entirely consumed. And this effect is attained without the use of unusually large containers or an unusually large high-pressure reservoir.-

In order to hold the apparatus in an upright position the handle or shaft 12 is most conveniently provided with a suspended leg 61 which may be allowed to .han m a vertical )osltion.

In this way the leg may operate as a stand to hold up .the shaft. lVhen the device is being wheeled vided, if'desired, with a small box 53 -to hold tools of any kind orhosenozzles, etc.

' The arrangement described above for the inlets and outlets of the mixer is highly ada tageou as I? produce a thorough mixture ds anjdreifect theex'it of the mix- ,same general. direction of his-preventsthe two -1pres's'ures from I e t\ i containers from neutralizing the 'eloeitiesintheflnixertf he composition ofjthe two solutions I r to usfe.Luiitlrthis apparatus is subitia 1y asljfollowsz L Solution No; 1.

iii-carbonate 8 parts v w u l oamite {secondar ext act of,

ieoriee root)", 3

Solution/V0. 2. himinlumslllfate VViiter 89 The apparatus may include an elevated s lf 5g1ltobe usedas a hose-rack. to carry OIl QfhOS B.

iiii clersto odthat the embodiment of rition set forth herein is only one anv.embodiments OI,fOIIl1S the inn ytake, and I do not wish to be ed i injihefpractice of the invention myvclaims to the particularembodinientset forthgfAnd; I may use any feature of invention" without the other eatuiesp... v

What IIelaimvis: p

ort ablelfire extinguisher, comprishg, ingcombination,a portable frame,a pair ontainers for holding different liquids operating upon. mixture to develop a foam and aagas noxious to combustion, a mixer eoiinecteilovitli said containers in which the n ix: to generate the foam and gas, selalttachedxtii the mixer for projecting m'xture toward the fire, a compressed aim-e .rvoiinconnected with the upper parts o said containers, and an automatic preseaeldiicing valve between said reservoir containers for .n'iaintaining a charge 0 compressed air in said containers t apressure.upon theliquidsiherein and .force the same through said mixer.

portable lire extinguisher, comprisgrog, .in coinliination,v a. portable frame, a eauehaviag a dividing partition dividing the.interiorthereof into two containers, said airin openmamas to develop a foam and noxious to eonibustion, a mixer connected. witlr said containers in which the 'ifuids .mix to generate the. foam and gas, adios-of attached to the mixer for projecting the mixturetoward the are, a compressed ;.air reservoir, a pipe leadingtherefrom havecmtainers, :1 and I an automatic pressure-re ducing one connected in said pipe for m aintai niup;a charge of eompresseclair in {aid containers to. exert a pressure upon the tendingacross'said cylinder and (livid the interior thereol Mitt) two containers or 11v parts.

containers]for holding di'llerent liquids'iipeu.

higliranehes leading respectively to said.

liquids therein and force the same through said mixer." i v 3. A, portable fire extingguishing a ppara tus, comprising, in eou'ibimition. a portable frame, a tankin the form oi a cvlinderhavmg convex heads, a transversepartition exholding different liquids operating upon mixture to develop loamand a gas noxious to combustion a' mixer coni'iectcd with said containers in: which the-liquidsmix to gem crate foam and a gas, ahose attached tothe ,mixer fo'r projecting the mixture tinvard reservoir, a pipe extendin" across said C VllYltlOl1lll(l. dividing" 'theinterlorthereof into two containers for difl erent liquids operating" upon mixture to develop a gas noxious to eonihustion, a higlnpressure air reservoir, an automatic pressure-redocingr valve through which air passes from said air. reservoir to said containers to develop a working pressure in said conla'ii'iers to forcethe liquids therefrom, and means for eli'ecting' a mixture oi the liquids and for directing" the same toward the fire.

A portable fire-extinguishing apparir tus, comprising, in combination. a portable frame, a tank in the form oi a cylinder branches lead-h1g1;

mg convex heads, a transverse tlat partition having convex heads, a transverse flat partition extending across said cylinder and dividing the interior thereol into two containers for diii'erent liquidsoperating! upon mixture to develop a gas noxious to combustion, a higlvpressure air reservoir. an

automatic pressure-reducinpf valve. through which air passeslrom said air reservoir to said containers to develop a working pressure in said containers to force the liquids therefrom, a mixer, pipes leading: the liquids from said conta ners so that they enter said mixer in the same eeneral diri-ietion, a delivery nipple on said mixer pi'Qha-ting from the mixer so as to lead the mixture there from in the same-general direction in which it is adn'iitted to said mixer by said pipes, and'a hose attached to said delivery nipple for directing the mixture toward the fire...

6. A portable fire extinguisl'ier, compris ing, in combination, a portable Home, a pair of containers forholding diil'erent liquids operating upon mixture to develop a foam and a gas noxious to combustion, a mixer having pipe connections with said contamers in which the liquids mix ,to generate a foam and gas, said mixer embodying a 3- of containers for holding the pipe connections between the reservoir and said containers.

'7. A portable fire extinguisher, comprising, in combination, a wheeled frame, a pair difiere'nt liquids operating upon mixture to develop a foam,

a 3-way valve having an outlet and separate pipe connections with said containers, said valve including in its construction an enlarged mixing chamber in which the liquids mix to generate a foam, and a hose attached to the valve outlet for projecting the foam from the mixing chamber toward the fire.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

WILLIAM W. WALKER.

\Vitnesses:

JOSEPH A. BERGMANN,

W. Wns'r JORDAN. 

